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2021 JEE PYQ

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE-MAIN 2021
Wires $W_1$ and $W_2$ are made of same material having the breaking stress of $1.25 \times 10^9 \mathrm{~N} / \mathrm{m}^2 . W_1$ and $W_2$ have...
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Q JEE MAIN 2021
Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature ?
$($ Given Z for $\mathrm{Nd}=60, \mathrm{Yb}=70, \mathrm{La}=57, \mathrm{Ce}=58)$
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Q JEE-MAIN 2021
A zener diode of power rating 2W is to be used as a voltage regulator. If the zener diode has a breakdown of 10 V...
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Q JEE MAIN 2021
In the following sequence of reactions a compound A , (molecular formula $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_2$ ) with a straight chain structure gives a $\mathrm{C}_4$ carboxylic...
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Q JEE MAIN 2021
A system consists of two identical spheres each of mass 1.5 kg and radius 50 cm at the end of light rod. The distance between...
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Q JEE MAIN 2021
The major products A and B in the following set of reactions are :
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Q JEE-MAIN 2021
X different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal quantum number n...
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Q JEE MAIN 2021
A small square loop of side ' $a$ ' and one turn is placed inside a larger square loop of side $b$ and one turn...
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Q JEE MAIN 2021
A current of 1.5 A is flowing through a triangle, of side 9 cm each. The magnetic field at the centroid of the triangle is...
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Q JEE MAIN 2021`
Statement I: Two forces $\left(\stackrel{\Delta \stackrel{\Delta}{\mathrm{P}}+\stackrel{\Delta}{\mathrm{Q}})}{(\stackrel{\Delta}{\mathrm{P}}-\stackrel{\Delta}{\mathrm{Q}})}\right.$ and where $^{(\stackrel{\Delta}{\mathrm{P}} \perp \stackrel{\Delta}{\mathrm{Q}})}$, when act at an angle $\theta_1$ to each other, the magnitude of their resultant...
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